Quote - Well, the ruffled dress I made is multi layer, I think. The ruffles are a seperate OBJ alltogether. To keep the attached, I had to make them a Soft Decorated Group tho. That's also how I made the pocket on the orange robe I did for M4. It's a seperate OBJ made into a soft decorated group. I don't know if that's how it's supposed to be done, but it worked for me. You can do multiple layers by also adding additional clothes and running more than 1 cloth simulation, making each collide with the clothes underneath it. That's just what I've found in experimenting around. If the multi-layered garment is all in 1 obj tho, I would say cloth self-colision, and the 3 other check boxes would be the key to get it working.

this is how ILM,pixar,WETA,.... are doing cloth simulation.